CN114653182A - Energy-conserving high-efficient compound denitration device - Google Patents
Energy-conserving high-efficient compound denitration device Download PDFInfo
- Publication number
- CN114653182A CN114653182A CN202210311660.6A CN202210311660A CN114653182A CN 114653182 A CN114653182 A CN 114653182A CN 202210311660 A CN202210311660 A CN 202210311660A CN 114653182 A CN114653182 A CN 114653182A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- denitration
- pipeline
- tower
- sncr
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 6
- 239000003546 flue gas Substances 0.000 claims abstract description 158
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 157
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000007789 gas Substances 0.000 claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 23
- 239000007921 spray Substances 0.000 claims abstract description 23
- 239000002131 composite material Substances 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000000265 homogenisation Methods 0.000 claims abstract description 13
- 239000000779 smoke Substances 0.000 claims description 47
- 238000006243 chemical reaction Methods 0.000 claims description 37
- 239000003795 chemical substances by application Substances 0.000 claims description 35
- 238000001514 detection method Methods 0.000 claims description 32
- 239000003638 chemical reducing agent Substances 0.000 claims description 30
- 239000003054 catalyst Substances 0.000 claims description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 19
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 238000002485 combustion reaction Methods 0.000 claims description 17
- 238000005507 spraying Methods 0.000 claims description 13
- 239000003345 natural gas Substances 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 5
- 238000009987 spinning Methods 0.000 claims description 4
- 239000003570 air Substances 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000009529 body temperature measurement Methods 0.000 description 8
- 230000000087 stabilizing effect Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 238000010531 catalytic reduction reaction Methods 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 238000003916 acid precipitation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/10—Conditioning the gas to be cleaned
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/346—Controlling the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8696—Controlling the catalytic process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The application discloses energy-conserving high-efficient compound denitration equipment relates to the environmental protection equipment field. The denitration equipment comprises a flue gas inlet system and an efficient heat exchange system; the back of the high-efficiency heat exchange system is connected with a three-way processing system and is merged into an SNCR denitration A tower after being processed respectively; the three processing systems are respectively as follows: a primary flue gas system, a secondary flue gas system and a tertiary flue gas system; first-level flue gas system and natural gasGas of the gas inlet system is connected in parallel and then is converged into the SNCR denitration A tower; the second-stage flue gas system and the third-stage flue gas system are respectively sprayed and treated by a three-fluid spray gun system and then enter an SNCR denitration A tower; the SNCR denitration A tower is connected with the SCR denitration B tower; the method realizes energy conservation and emission reduction and NO collection and control by combining a plurality of technologies such as SNCR and SCR composite denitration, an efficient heat exchanger, efficient homogenization of a flue gas temperature field, efficient homogenization of a flue gas concentration field, efficient collection and control of flue gas parameter inlet and outletXAnd the purpose of standard emission of ammonia.
Description
Technical Field
The application relates to the field of flue gas denitration, in particular to an energy-saving and efficient composite denitration device.
Background
Currently, three environmental issues facing the world include: greenhouse effect, acid precipitation and ozone layer depletion; among the pollutants responsible for the above-mentioned atmospheric environmental problems, NOXOccupies a very important proportion, and is sufficient for greatly influencing the nature. NOXThe compound is not only the basis of nitric acid type acid rain, but also one of main substances which form photochemical smog and destroy the ozone layer, has strong toxicity, and has great harm to human bodies, environment and ecology and great damage to social economy.
Denitration of flue gas, i.e. removal of NOx producedXReduction to N2Thereby removing NO in the smokeXThe flue gas denitration technology mainly comprises a dry method and a wet method. The dry denitration process comprises selective non-catalytic reduction (SNCR) and Selective Catalytic Reduction (SCR); and the wet denitration process is mainly an ozone oxidation absorption method. Compared with the wet method, the dry method has the main advantages that: low investment, simple equipment and technological process, and NO removalXThe efficiency is higher, no wastewater and waste treatment is caused, and secondary pollution is not easy to cause. Among numerous denitration technologies, the selective catalytic reduction SCR has the highest denitration efficiency which can reach 80-90%, and becomes the most mature denitration technology at present.
Currently, strict NO is established in a plurality of provinces and regions in ChinaXThe emission standard requires that the denitration efficiency is required to reach 97-99.5%, the requirement on ammonia escape indexes is more and more strict, and the traditional denitration technology can not meet new standards any more.
Disclosure of Invention
In order to solve the technical problems, the application provides an energy-saving efficient composite denitration device, the energy-saving efficient commercial denitration technology is further optimized, the device is used for realizing energy conservation, emission reduction and NO parameter import and export efficient collection and control through combination of multiple technologies such as SNCR and SCR composite denitration, an efficient heat exchanger, efficient homogenization of a flue gas temperature field, efficient homogenization of a flue gas concentration field and the like, and the energy conservation, emission reduction and NO are realizedXAnd the purpose of standard emission of ammonia.
The technical problem of the application is realized by the following technical scheme: an energy-saving high-efficiency composite denitration device comprises a flue gas inlet system and a high-efficiency heat exchange system which are sequentially connected; the back of the high-efficiency heat exchange system is connected with a three-way processing system for processing respectively and then converging the processed products into an SNCR denitration A tower; the SNCR denitration A tower is connected with an SCR denitration B tower, and the flue gas of the SCR denitration B tower enters a flue gas discharge system after being treated by an efficient heat exchange system;
the three processing systems are respectively as follows: a primary flue gas system, a secondary flue gas system and a tertiary flue gas system; the gas of the primary flue gas system and the gas of the natural gas inlet system are connected in parallel and then are converged into the SNCR denitration A tower; and the second-stage flue gas system and the third-stage flue gas system respectively enter the SNCR denitration A tower after being sprayed by the three-fluid spray gun system.
Further, the SNCR denitration A tower sequentially comprises a combustion zone, an SNCR reaction zone and a mixed third zone along the airflow direction;
the combustion area is a combustion space of primary flue gas, air and natural gas;
the SNCR reaction zone comprises an annular cavity A communicated with the secondary flue gas system, and a spinning disk is arranged in the annular cavity A;
the mixed third zone comprises an annular cavity B communicated with the three-stage flue gas system, and the annular cavity B is communicated with the mixed third zone reaction space through a three-stage flue gas outlet; and the rear part of the third mixing area is connected with a high-temperature flue gas pipeline.
Further, the SCR denitration B tower sequentially comprises a mixed fourth zone, a mixed fifth zone and an SCR reaction zone along the airflow direction; an umbrella-shaped outlet is arranged in the mixed fourth area, and a homogenization layer A is arranged at the bottom of the mixed fourth area; and a homogenization B layer is arranged at the bottom of the fifth mixing area.
Further, the SCR reaction zone comprises a plurality of layers of reaction spaces, and the plurality of layers of reaction spaces sequentially comprise a first layer of catalyst, a C space, a second layer of catalyst, a D space, an E space, a third layer of catalyst, an F space, a standby layer of catalyst and a G space.
Further, the three-fluid spray gun system comprises a compressed air system, a reducing agent rough adjusting system and a reducing agent fine adjusting system which are connected in parallel; the three-fluid spray gun system terminates with a three-fluid spray gun.
Further, the compressed air system comprises a compressed air pipeline, and an air pressure manual ball valve, an air source triple piece and a manual adjusting needle valve are sequentially arranged on the compressed air pipeline along the air flow direction.
Further, the reducing agent rough adjusting system comprises a denitration agent vat, an ammonia supplementing pump and a denitration agent keg which are sequentially connected, wherein the denitration agent keg is connected with an ammonia spraying A pump and a denitration agent A pipeline, and the terminal end of the denitration agent A pipeline is converged into a three-fluid spray gun; the reducing agent fine adjustment system comprises an ammonia spraying B pump connected with the denitration agent small barrel, a denitration agent B pipeline is connected behind the ammonia spraying B pump, and the terminal end of the denitration agent B pipeline is converged into a three-fluid spray gun.
Furthermore, a gas path of the natural gas inlet system is sequentially provided with a gas main valve, a manual gas valve, a gas electromagnetic valve, an air-fuel proportional valve and a heating burner, and the heating burner is arranged at the gas inlet end of the SNCR denitration A tower; the primary flue gas system comprises a primary pipeline for conveying primary flue gas and an air mixing pipeline, and a proportion adjusting valve is arranged on the primary pipeline; the air mixing pipeline is sequentially provided with a high-pressure blower, a manual regulating valve and a proportion regulating valve, and the tail end of the air mixing pipeline is connected to the heating burner.
Furthermore, a smoke inlet detection port and a smoke inlet three-way detection port are arranged on the smoke inlet system; the high-efficiency heat exchange system comprises a flue gas distribution B pipeline, heat exchange equipment and a flue gas distribution A pipeline, wherein the flue gas distribution B pipeline is communicated with a flue gas inlet system, the flue gas distribution A pipeline is communicated with a main pipeline, and the main pipeline is connected with a three-way processing system.
Further, the smoke exhaust system comprises a smoke exhaust pipeline arranged behind the efficient heat exchange system, and a smoke exhaust three-party detection port and a smoke exhaust outlet detection port are arranged on the smoke exhaust pipeline.
In summary, the present application has the following beneficial effects:
the compound denitration equipment of this application has energy-conservation showing, the denitration is efficient, ammonia escape is low, be convenient for detect, exempt from cat ladder and platform, comdenstion water automatic collection emission, the zero escape of flue gas is more environmental protection, installation maintenance detects the advantage that the manufacturability is good.
Drawings
FIG. 1 is a schematic process diagram of the apparatus of the present application;
FIG. 2 is a schematic representation of the flow of flue gas (open single arrows) and the flow of reducing agent (solid double arrows) prior to introduction of catalyst;
FIG. 3 is a schematic diagram of the catalyzed flue gas flow direction (open double arrow), natural gas flow direction (open triple arrow) and condensed water flow direction (solid triple arrow);
FIG. 4 is a schematic structural diagram of an SNCR multifunctional denitration A tower;
FIG. 5 is a schematic structural diagram of an SCR multifunctional denitration B tower, a flue gas inlet system, a smoke exhaust system and an efficient heat exchange system;
FIG. 6 is a schematic view of a three-fluid spray gun system.
Description of reference numerals:
1. a flue gas inlet system; 101. a flue gas inlet interface; 102. a smoke inlet detection port; 103. a smoke inlet three-party detection port;
2. a high efficiency heat exchange system; 201. a flue gas distribution A pipeline; 202. heat exchange equipment; 203. a flue gas distribution pipeline B; 204. a condensed water C pipe; 205. a main pipeline;
3. a smoke exhaust system; 301. a smoke exhaust duct; 302. a smoke discharge three-party detection port; 303. a smoke exhaust outlet detection port; 304. a smoke exhaust umbrella cover;
4. a primary flue gas system; 401. a primary pipeline; 402. a proportional regulating valve; 403. a high pressure blower; 404. manually adjusting a valve; 405. a proportional regulating valve; 406. an air mixing duct;
5. a secondary flue gas system; 501. a secondary pipeline; 502. a proportional regulating valve;
6. a third-stage flue gas system; 601. a tertiary pipeline; 602. a manual regulating three valve;
7. a natural gas intake system; 701. a gas main valve; 702. a manual gas valve; 703. a gas solenoid valve; 704. an air-fuel ratio valve; 705. heating the burner;
8. an SNCR denitration A tower; 801. a combustion zone; 802. an SNCR reaction zone; 803. a third zone of mixing; 804. an annular cavity A; 805. an annular cavity B; 806. a spinning disk; 807. a secondary flue gas outlet; 808. an SNCR smoke temperature detection port; 809. a third-stage flue gas outlet; 810. insulating the layer A; 811. a high temperature flue gas duct; 812. a condensed water A pipe;
9. SCR denitration B tower;
901. a mixing fourth zone; 9011. homogenizing the layer A; 9012. an umbrella-shaped outlet; 9013. detecting port A for standby; 9014. a condensed water pipe B;
902. a mixed fifth zone; 9021. homogenizing the B layer; 9022. an initial catalyst smoke temperature detection port;
903. an SCR reaction zone; 9031. a first layer of catalyst; 9032. a second layer of catalyst; 9033. a third layer of catalyst; 9034. a spare layer catalyst; 9035. insulating the layer B; 9036. detecting port C for standby; 9037. a C space; 9038. detecting a port D for standby; 9039. d space; 9040. detecting an E port for later use; 9041. e space; 9042. detecting an F port for later use; 9043. f space; 9044. detecting a G port for standby; 9045. a G space; 9046. fixing a bracket;
10. a compressed air system; 1001. an air-compression manual ball valve; 1002. an air source triplet; 1003. manually adjusting the needle valve; 1004. a compressed air conduit;
11. a reductant coarse tuning system; 1101. a pin remover vat; 1102. an ammonia supplementing pump; 1103. a pin remover keg; 1104. an ammonia spraying A pump; 1105. a denitration agent A pipeline; 1106. coarse adjustment of the ball valve; 1107. a pressure stabilizing valve is roughly adjusted; 1108. manually coarsely adjusting the needle valve;
12. a reductant fine-tuning system; 1201. an ammonia injection B pump; 1202. a denitration agent B pipeline; 1203. finely adjusting the ball valve; 1204. finely adjusting a pressure stabilizing valve; 1205. manually fine-adjusting the needle valve;
13. a three-fluid spray gun;
14. and a condensed water collecting pipe.
Detailed Description
The present application is described in further detail below with reference to the attached drawings. Referring to fig. 1-6, an energy-saving and efficient composite denitration apparatus includes a flue gas inlet system 1 and an efficient heat exchange system 2 connected in sequence; the back of the high-efficiency heat exchange system 2 is connected with three processing systems for processing respectively and then is converged into an SNCR denitration A tower 8;
the three processing systems are respectively as follows: a primary flue gas system 4, a secondary flue gas system 5 and a tertiary flue gas system 6; the gas of the primary flue gas system 4 and the gas of the natural gas inlet system 7 are connected in parallel and then flow into an SNCR denitration A tower 8; the two-stage flue gas system 5 and the three-stage flue gas system 6 respectively enter an SNCR denitration A tower 8 after being sprayed by a three-fluid spray gun system;
the SNCR denitration A tower 8 is connected with the SCR denitration B tower 9, and the flue gas of the SCR denitration B tower 9 enters the flue gas discharge system 3 after being treated by the efficient heat exchange system 2.
Referring to fig. 4, the SNCR denitration a tower 8 includes a combustion zone 801, an SNCR reaction zone 802, and a mixed third zone 803 in this order in the gas flow direction; the shell of the SNCR denitration A tower 8 is wrapped with a heat preservation A layer 810.
The combustion zone 801 is a combustion space of primary flue gas, air and natural gas;
the SNCR reaction zone 802 comprises an annular A cavity 804 communicated with the secondary flue gas system 5, a cyclone plate 806 is arranged in the annular A cavity 804, gas in the combustion zone 801 enters the SNCR reaction zone 802 from a secondary flue gas outlet 807, and an SNCR smoke temperature detection port 808 is arranged in the SNCR reaction zone 802; the gas inside the SNCR reaction zone 802 includes high-temperature flue gas, secondary flue gas and gaseous denitration reducing agent generated by the combustion in the combustion zone 801.
And a condensate water A pipe 812 is arranged at the bottom of the annular cavity A804.
The mixing third zone 803 comprises an annular B cavity 805 communicated with the tertiary flue gas system 6, and the annular B cavity 805 is communicated with the reaction space of the mixing third zone 803 through a tertiary flue gas outlet 809; the gas mixed in the third zone 803 comprises high-temperature flue gas, three-stage flue gas and gaseous denitration reducing agent after the mixed reaction in the SNCR reaction zone 802.
The third mixing zone 803 is followed by a high temperature flue gas line 811.
Referring to fig. 5, the SCR denitration B tower 9 includes a mixed fourth zone 901, a mixed fifth zone 902, and an SCR reaction zone 903 in this order along the gas flow direction.
A standby detection A port 9013 and an umbrella-shaped outlet 9012 with a downward opening are arranged in the mixed fourth area 901, and a homogenization A layer 9011 and a condensate water B pipe 9014 are arranged at the bottom of the mixed fourth area 901; the middle part of the fifth mixing area 902 is provided with a catalyst initial smoke temperature detection port 9022, and the bottom part of the fifth mixing area is provided with a homogenization B layer 9021.
The SCR reaction zone 903 is connected with a smoke exhaust system 3 through a fixed support 9046, the SCR reaction zone 903 comprises a plurality of layers of reaction spaces, a heat preservation layer B9035 wraps the outside of each layer of reaction space, and the plurality of layers of reaction spaces sequentially comprise:
the device comprises a first layer of catalyst 9031 and a C space 9037, wherein a standby detection C port 9036 is arranged in the C space 9037;
a second-layer catalyst 9032 and a D space 9039, wherein a standby detection D port 9038 is arranged in the D space 9039;
an E space 9041, wherein a standby detection E port 9040 is arranged in the E space 9041;
a third layer of catalyst 9033 and an F space 9043, wherein a standby detection F port 9042 is arranged in the F space 9043;
the device comprises a standby layer catalyst 9034 and a G space 9045, wherein a standby detection G port 9044 is arranged in the G space 9045.
Referring to FIG. 6, the three-fluid spray gun system includes a compressed air system 10, a reductant coarse tuning system 11, a reductant fine tuning system 12, and a system terminating three-fluid spray gun 13.
The compressed air system 10 comprises a compressed air pipeline 1004, and an air pressure manual ball valve 1001, an air source triplet 1002 and a manual adjusting needle valve 1003 are sequentially arranged on the compressed air pipeline 1004 along the air flow direction.
The reducing agent coarse adjustment system 11 comprises a denitration agent large barrel 1101, an ammonia supply pump 1102 and a denitration agent small barrel 1103 which are sequentially connected, wherein an ammonia spraying A pump 1104 and a denitration agent A pipeline 1105 are connected behind the denitration agent small barrel 1103, and a coarse adjustment ball valve 1106, a coarse adjustment pressure stabilizing valve 1107 and a manual coarse adjustment needle valve 1108 are sequentially arranged on the denitration agent A pipeline 1105 along the flow direction of the denitration agent; the end of the strip A line 1105 opens into the three-fluid lance 13.
The reducing agent fine adjustment system 12 comprises an ammonia spraying B pump 1201 connected with a denitration agent keg 1103, the back of the ammonia spraying B pump 1201 is connected with a denitration agent B pipeline 1202, and a fine adjustment ball valve 1203, a fine adjustment pressure stabilizing valve 1204 and a manual fine adjustment needle valve 1205 are sequentially arranged on the denitration agent B pipeline 1202 along the flow direction of the denitration agent; the terminal end of the denitration agent B pipe 1202 opens into the three-fluid lance 13.
A gas main valve 701, a manual gas valve 702, a gas electromagnetic valve 703, an air-fuel ratio valve 704 and a heating burner 705 are sequentially arranged on a gas path of the natural gas inlet system 7, and the heating burner 705 is installed at the gas inlet end of the SNCR denitration A tower 8; the primary flue gas system 4 comprises a primary pipeline 401 for conveying primary flue gas and an air mixing pipeline 406, wherein a proportional regulating valve 402 is arranged on the primary pipeline 401; the air mixing pipeline 406 is sequentially provided with a high-pressure blower 403, a manual regulating valve 404 and a proportional regulating valve 405, and the tail end of the air mixing pipeline 406 is connected to a heating burner 705.
The flue gas inlet system 1 is provided with a flue gas inlet detection port 102 and a flue gas inlet three-way detection port 103, and the pretreated flue gas enters the flue gas inlet system 1 through a flue gas inlet interface 101.
The high-efficiency heat exchange system 2 comprises a flue gas distribution B pipeline 203, heat exchange equipment 202 and a flue gas distribution A pipeline 201, the flue gas distribution B pipeline 203 is communicated with a flue gas inlet system 1, the flue gas distribution A pipeline 201 is communicated with a main pipeline 205, the main pipeline 205 is connected with a three-way processing system, a secondary flue gas system 5 and a tertiary flue gas system 6 are connected in parallel after being shunted by the main pipeline 205 and are respectively converged into an SNCR denitration A tower 8, and the secondary flue gas system 5 comprises a secondary pipeline 501 and a proportional regulating valve 502; the three-stage flue gas system 6 comprises a three-stage pipeline 601 and a manual regulation three-valve 602.
And a condensate C pipe 204 is arranged at the bottom of the high-efficiency heat exchange system 2.
The smoke exhaust system 3 comprises a smoke exhaust pipeline 301 arranged behind the efficient heat exchange system 2, a smoke exhaust three-party detection port 302 and a smoke exhaust outlet detection port 303 are arranged on the smoke exhaust pipeline 301, and a smoke exhaust umbrella cover 304 is arranged at the tail end of the smoke exhaust pipeline 301.
The condensate water pipe A812, the condensate water pipe B9014 and the condensate water pipe C204 are finally converged into the condensate water collecting pipe 14 and discharged from the denitration device.
The detection device of the denitration device is not limited to the detection devices listed above, and further comprises other necessary multiple measurement and control systems according to actual conditions, such as: the system comprises a flue gas temperature measurement and control system, a flue gas component measurement system, a flue gas flow control system and a denitration reducing agent control system.
The flue gas temperature measurement and control system comprises an SNCR reaction zone flue gas temperature measurement and control system, a catalyst initial flue gas temperature measurement and control system, a catalyst tail end flue gas temperature measurement and control system, a flue gas standard emission temperature measurement system, an initial flue gas temperature measurement system and a plurality of standby port temperature measurement systems;
the smoke component measuring system consists of initial smoke component measurement and smoke up-to-standard emission component measurement;
the smoke flow control system is composed of initial smoke flow measurement and smoke discharge flow measurement reaching the standard;
the denitration reducing agent control system is composed of denitration reducing agent rough adjustment control, denitration reducing agent fine adjustment control and denitration reducing agent metering control.
The main process of the denitration equipment has the working principle that: after the pretreated flue gas enters the efficient heat exchange system 2 through the flue gas inlet interface 101, the temperature of the flue gas is further increased, the flue gas is divided into three stages, wherein the atomized denitration liquid sprayed by the three-fluid spray gun 13 is mixed with the flue gas to form two-stage and three-stage flue gas.
The primary flue gas is mixed with air through a proportional regulating valve 402 and then enters a heating burner 705 through a high-pressure blower 403, a manual regulating valve 404 and a proportional regulating valve 405, meanwhile, natural gas also enters the heating burner 705 through a gas main valve 701, a manual gas valve 702, a gas electromagnetic valve 703 and an air-fuel proportional valve 704, so that the automatic combustion of the heating burner 705 is realized, the heating power is automatically regulated in five stages according to the collected temperature at an initial flue gas temperature detection port 9022 of the catalyst, the flow of the primary flue gas is automatically regulated through the proportional regulating valve 405 according to the five stages of heating power, and the low-nitrogen heating combustion of the heating burner 705 is realized;
the second grade flue gas passes through the proportional control valve 502 and enters the annular A cavity 804, passes through the spinning disk 806, and the flue gas is rotatory to enter the SNCR reaction area 802 through the second grade flue gas outlet 807, and the high temperature flue gas of the combustion area 801 also enters the SNCR reaction area 802, wherein the proportional control valve 405 is automatically adjusted by the collection temperature at the SNCR flue gas temperature detection port 808, ensures that the reaction temperature of the SNCR reaction area 802 is always in the ideal range, and realizes the SNCR denitration treatment of the first grade flue gas and the second grade flue gas.
The third stage flue gas enters an annular B cavity 805 through a manual regulation triple valve 602, enters a mixed third zone 803 through a tertiary flue gas outlet 809, is further mixed with the first stage flue gas and the second stage flue gas through a high-temperature flue gas pipeline 811, and is sprayed out through an umbrella-shaped outlet 9012, the sprayed flue gas is turned back through a homogenization layer A9011 and is uniformly dispersed, at the moment, the temperature field and the concentration field of the flue gas are greatly homogenized, the flue gas enters a mixed fifth zone 902 through a homogenization layer B9021, at the moment, ideal homogenization is realized in the temperature field and the concentration field of the flue gas, the flue gas passes through a plurality of layers of catalysts such as a first layer catalyst 9031, a second layer catalyst 9032, a third layer catalyst 9033 and a standby layer catalyst 9034, the SCR denitration reaction is completed, and the flue gas is cooled through a high-efficiency heat exchange system 2 and then is discharged through a flue gas exhaust pipeline 301 and a flue gas exhaust umbrella cover 304.
The control principle of this application high denitration efficiency, low ammonia escape does:
the flue gas is divided into three stages, the first stage flue gas is subjected to low-nitrogen combustion through the heating burner 705, and more NO is prevented from being generated in the heating process of the flue gasXThe first-stage flue gas and the second-stage flue gas are subjected to SNCR denitration treatment in the SNCR reaction area 802, the initial concentration of NOx in the flue gas is reduced by 10% -20%, and the difficulty of the next denitration treatment is reduced.
The first, second and third stages of flue gas are converged and mixed for a plurality of times, and the homogenized flue gas enters an SCR denitration B tower 9 for catalytic denitration and then is discharged after reaching the standard through a flue gas discharge pipeline 301 and a flue gas discharge umbrella cover 304. Wherein the smoke parameters (flow, smoke temperature, NO) measured at the smoke inlet 102XConcentration of the denitration reducing agent) to calculate and control the usage of the denitration reducing agent coarse adjustment system 11 to 90-95% of the coulomb usage, strictly controlling the usage not to be excessive, and meanwhile calculating and controlling the usage of the denitration reducing agent fine adjustment system 12 within a normal range according to the flue gas temperature measured at the standby detection G port 9044 of the discharged flue gas and the flue gas parameters (flow, NOx concentration and NH3 concentration) measured at the smoke exhaust outlet detection port 303.
The working principle of the three-fluid spray gun system is as follows:
the three fluids are compressed air, a large-flow denitration reducing agent and a small-flow denitration reducing agent.
The compressed air system is that compressed air enters the three-fluid spray gun 13 through the regulation of a manual regulating needle valve 1003 after being subjected to pressure stabilizing control through an air pressure manual ball valve 1001 and an air source triple piece 1002;
the denitration reducing agent is automatically pumped into the denitration agent small barrel 1103 from the denitration agent large barrel 1101 by the ammonia supply pump 1102, the large-flow denitration reducing agent is automatically pumped into the denitration agent A pipeline 1105 from the denitration agent small barrel 1103 by the ammonia spraying A pump 1104, and then enters the three-fluid spray gun 13 through the adjustment of the rough adjusting ball valve 1106, the rough adjusting pressure stabilizing valve 1107 and the manual rough adjusting needle valve 1108;
the small-flow denitration reducing agent is automatically pumped into a denitration agent B pipeline 1202 from a denitration agent keg 1103 by an ammonia spraying B pump 1201, and enters a three-fluid spray gun 13 through the regulation of a fine adjustment ball valve 1203, a fine adjustment pressure stabilizing valve 1204 and a manual fine adjustment needle valve 1205.
The above is a preferred embodiment of the present application, and the present application is not limited to the above-mentioned structure, and may have various modifications, and may be applied to more similar fields, and in short, all modifications and changes that do not depart from the design idea, mechanical structure form, and intelligent driving control manner of the present application fall within the scope of the present application.
Claims (10)
1. The utility model provides an energy-conserving high-efficient compound denitration device which characterized in that: comprises a flue gas inlet system (1) and a high-efficiency heat exchange system (2) which are connected in sequence; the back of the high-efficiency heat exchange system (2) is connected with a three-way processing system for processing respectively and then converging into an SNCR denitration A tower (8); the SNCR denitration A tower (8) is connected with an SCR denitration B tower (9) in back, and the flue gas of the SCR denitration B tower (9) enters a flue gas discharge system (3) after being treated by the efficient heat exchange system (2);
the three processing systems are respectively as follows: a primary flue gas system (4), a secondary flue gas system (5) and a tertiary flue gas system (6); the gas of the primary flue gas system (4) and the gas of the natural gas inlet system (7) are connected in parallel and then are converged into an SNCR denitration A tower (8); and the secondary flue gas system (5) and the tertiary flue gas system (6) respectively enter an SNCR denitration A tower (8) through the spraying treatment of a three-fluid spray gun system.
2. The energy-saving and efficient composite denitration equipment as claimed in claim 1, characterized in that: the SNCR denitration A tower (8) sequentially comprises a combustion zone (801), an SNCR reaction zone (802) and a mixed third zone (803) along the airflow direction;
the combustion zone (801) is a combustion space of primary flue gas, air and natural gas;
the SNCR reaction zone (802) comprises an annular cavity A (804) communicated with the secondary flue gas system (5), and a spinning disk (806) is arranged in the annular cavity A (804);
the mixing third zone (803) comprises an annular B cavity (805) communicated with a three-stage flue gas system (6), and the annular B cavity (805) is communicated with a reaction space of the mixing third zone (803) through a three-stage flue gas outlet (809); the third mixing zone (803) is followed by a high temperature flue gas duct (811).
3. The energy-saving and efficient composite denitration device according to claim 1, characterized in that: the SCR denitration B tower (9) sequentially comprises a mixed fourth area (901), a mixed fifth area (902) and an SCR reaction area (903) along the airflow direction; an umbrella-shaped outlet (9012) is arranged in the mixed fourth area (901), and a homogenization layer A (9011) is arranged at the bottom of the mixed fourth area (901); the bottom of the fifth mixing zone (902) is provided with a homogenization B layer (9021).
4. The energy-saving and efficient composite denitration device according to claim 3, characterized in that: the SCR reaction zone (903) comprises a multilayer reaction space, wherein the multilayer reaction space sequentially comprises a first layer of catalyst (9031), a C space (9037), a second layer of catalyst (9032), a D space (9039), an E space (9041), a third layer of catalyst (9033), an F space (9043), a spare layer of catalyst (9034) and a G space (9045).
5. The energy-saving and efficient composite denitration device according to claim 1, characterized in that: the three-fluid spray gun system comprises a compressed air system (10), a reducing agent rough adjusting system (11) and a reducing agent fine adjusting system (12) which are connected in parallel; the three-fluid spray gun system is terminated by a three-fluid spray gun (13).
6. The energy-saving and efficient composite denitration device according to claim 5, characterized in that: the compressed air system (10) comprises a compressed air pipeline (1004), and an air pressure manual ball valve (1001), an air source triple piece (1002) and a manual adjusting needle valve (1003) are sequentially arranged on the compressed air pipeline (1004) along the air flow direction.
7. The energy-saving and efficient composite denitration device according to claim 5, characterized in that: the reducing agent rough adjusting system (11) comprises a denitration agent vat (1101), an ammonia supplementing pump (1102) and a denitration agent keg (1103) which are connected in sequence, an ammonia spraying A pump (1104) and a denitration agent A pipeline (1105) are connected behind the denitration agent keg (1103), and the terminal of the denitration agent A pipeline (1105) is converged into a three-fluid spray gun (13); the reducing agent fine adjustment system (12) comprises an ammonia spraying B pump (1201) connected with a denitration agent small barrel (1103), the ammonia spraying B pump (1201) is connected with a denitration agent B pipeline (1202) in back, and the terminal end of the denitration agent B pipeline (1202) is converged into a three-fluid spray gun (13).
8. The energy-saving and efficient composite denitration equipment as claimed in claim 1, characterized in that: a gas main valve (701), a manual gas valve (702), a gas electromagnetic valve (703), an air-fuel ratio valve (704) and a heating burner (705) are sequentially arranged on a gas path of the natural gas inlet system (7), and the heating burner (705) is installed at the gas inlet end of the SNCR denitration A tower (8); the primary flue gas system (4) comprises a primary pipeline (401) for conveying primary flue gas and an air mixing pipeline (406), and the primary pipeline (401) is provided with a proportional control valve (402); the air mixing pipeline (406) is sequentially provided with a high-pressure blower (403), a manual regulating valve (404) and a proportion regulating valve (405), and the tail end of the air mixing pipeline (406) is connected to a heating burner (705).
9. The energy-saving and efficient composite denitration device according to claim 1, characterized in that: a smoke inlet detection port (102) and a smoke inlet three-way detection port (103) are arranged on the smoke inlet system (1); high-efficient heat transfer system (2) are including flue gas distribution B pipeline (203), heat transfer equipment (202) and flue gas distribution A pipeline (201), flue gas distribution B pipeline (203) and flue gas air intake system (1) switch-on, flue gas distribution A pipeline (201) and trunk line (205) switch-on, connect three routes processing system behind trunk line (205).
10. The energy-saving and efficient composite denitration equipment as claimed in claim 9, characterized in that: the smoke exhaust system (3) comprises a smoke exhaust pipeline (301) arranged behind the efficient heat exchange system (2), and a smoke exhaust three-party detection port (302) and a smoke exhaust outlet detection port (303) are arranged on the smoke exhaust pipeline (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210311660.6A CN114653182B (en) | 2022-03-28 | 2022-03-28 | Energy-saving efficient composite denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210311660.6A CN114653182B (en) | 2022-03-28 | 2022-03-28 | Energy-saving efficient composite denitration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114653182A true CN114653182A (en) | 2022-06-24 |
| CN114653182B CN114653182B (en) | 2023-11-28 |
Family
ID=82032997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210311660.6A Active CN114653182B (en) | 2022-03-28 | 2022-03-28 | Energy-saving efficient composite denitration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114653182B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10220720A (en) * | 1997-02-10 | 1998-08-21 | Takuma Co Ltd | Low nox combustion method in incineration furnace |
| US6206685B1 (en) * | 1999-08-31 | 2001-03-27 | Ge Energy And Environmental Research Corporation | Method for reducing NOx in combustion flue gas using metal-containing additives |
| US20110311424A1 (en) * | 2010-06-22 | 2011-12-22 | 2E Environmental, LLC | BIOMASS BOILER SCR NOx AND CO REDUCTION SYSTEM |
| JP2013017934A (en) * | 2011-07-08 | 2013-01-31 | Ihi Corp | Denitration device and denitration method |
| WO2017059820A1 (en) * | 2015-10-09 | 2017-04-13 | 广州特种承压设备检测研究院 | Reduction and oxidation combined denitration system and denitration method therefor |
| CN106731573A (en) * | 2016-12-27 | 2017-05-31 | 北京神雾环境能源科技集团股份有限公司 | Heat accumulating type natural gas boiler energy-saving denitration integral system |
| CN109916185A (en) * | 2019-01-04 | 2019-06-21 | 上海轩鼎冶金科技有限公司 | A kind of denitration fume extractor and regenerative combustion system |
| CN209612647U (en) * | 2019-01-31 | 2019-11-12 | 福建鑫泽环保设备工程有限公司 | Magnesite shaft furnace flue gas NO_x Reduction by Effective equipment |
| CN111450681A (en) * | 2020-04-14 | 2020-07-28 | 安徽工业大学 | Denitration, desulfurization and dust removal integrated system for supercritical carbon dioxide coal-fired boiler |
| CN112807944A (en) * | 2021-02-02 | 2021-05-18 | 浙江物产环能浦江热电有限公司 | Ammonia water flow adjusting system and method for tail gas denitration |
| CN215062041U (en) * | 2021-04-09 | 2021-12-07 | 山东一然环保科技有限公司 | Multistage burning nozzle case |
-
2022
- 2022-03-28 CN CN202210311660.6A patent/CN114653182B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10220720A (en) * | 1997-02-10 | 1998-08-21 | Takuma Co Ltd | Low nox combustion method in incineration furnace |
| US6206685B1 (en) * | 1999-08-31 | 2001-03-27 | Ge Energy And Environmental Research Corporation | Method for reducing NOx in combustion flue gas using metal-containing additives |
| US20110311424A1 (en) * | 2010-06-22 | 2011-12-22 | 2E Environmental, LLC | BIOMASS BOILER SCR NOx AND CO REDUCTION SYSTEM |
| JP2013017934A (en) * | 2011-07-08 | 2013-01-31 | Ihi Corp | Denitration device and denitration method |
| WO2017059820A1 (en) * | 2015-10-09 | 2017-04-13 | 广州特种承压设备检测研究院 | Reduction and oxidation combined denitration system and denitration method therefor |
| CN106731573A (en) * | 2016-12-27 | 2017-05-31 | 北京神雾环境能源科技集团股份有限公司 | Heat accumulating type natural gas boiler energy-saving denitration integral system |
| CN109916185A (en) * | 2019-01-04 | 2019-06-21 | 上海轩鼎冶金科技有限公司 | A kind of denitration fume extractor and regenerative combustion system |
| CN209612647U (en) * | 2019-01-31 | 2019-11-12 | 福建鑫泽环保设备工程有限公司 | Magnesite shaft furnace flue gas NO_x Reduction by Effective equipment |
| CN111450681A (en) * | 2020-04-14 | 2020-07-28 | 安徽工业大学 | Denitration, desulfurization and dust removal integrated system for supercritical carbon dioxide coal-fired boiler |
| CN112807944A (en) * | 2021-02-02 | 2021-05-18 | 浙江物产环能浦江热电有限公司 | Ammonia water flow adjusting system and method for tail gas denitration |
| CN215062041U (en) * | 2021-04-09 | 2021-12-07 | 山东一然环保科技有限公司 | Multistage burning nozzle case |
Non-Patent Citations (1)
| Title |
|---|
| 张小广等主编: "《大气污染治理技术 新2版》", 武汉理工大学出版社, pages: 248 - 249 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114653182B (en) | 2023-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205392185U (en) | Gas boiler catalytic denitrification system | |
| CN203764106U (en) | Flue gas denitrification device implemented by combining SNCR (selective non-catalytic reduction)-ozone oxidation with wet absorption | |
| CN204555717U (en) | Warm flue gas SCR denitration device in a kind of cement kiln end | |
| CN204699575U (en) | The flue gas combined denitrating system of a kind of cement kiln SNCR-SCR | |
| CN104548931A (en) | Device for producing ammonia gas through pyrolysis of urea by using high-temperature flue gas as heat source | |
| CN112880416A (en) | Ultralow emission method and system for cement kiln flue gas NOx | |
| CN112403218B (en) | Flue gas decarburization and denitration treatment system and method | |
| CN207342475U (en) | A kind of steel sintering machine flue gas desulfurization and denitrification equipment | |
| CN202725014U (en) | Energy-saving denitration device for cement dry kiln | |
| CN208406637U (en) | A kind of hydrolysis of urea denitrating system ammonia-gas spraying device heating dilution wind | |
| CN110575733A (en) | Skid-mounted type waste gas treatment device combining activated carbon adsorption and catalytic combustion | |
| CN204543995U (en) | A kind of cement kiln end low-temperature smoke air SCR denitrification apparatus | |
| CN105749738A (en) | Denitration system and process of low-temperature industrial waste gas | |
| CN114653182B (en) | Energy-saving efficient composite denitration device | |
| CN111686570A (en) | System and method for tail gas denitration of independent heat source grinding system | |
| CN217092856U (en) | Denitration process device with double systems combined | |
| CN103801189B (en) | A kind of method of mud denitrification apparatus and denitration thereof | |
| CN216778452U (en) | High-efficient aqueous ammonia of active carbon SOx/NOx control dilutes gasification system | |
| CN204469547U (en) | A kind of high-temperature flue gas that adopts is as the urea pyrolysis ammonia device of thermal source | |
| CN103512373B (en) | Energy-saving denitration device and method of cement dry-process kiln | |
| CN212039849U (en) | Pellet flue gas denitration treatment device | |
| CN210021739U (en) | SCR denitration system for industrial kiln tail gas NOx | |
| CN210964554U (en) | Chain grate-rotary kiln pellet flue gas ultralow emission system | |
| CN209596927U (en) | Equipment for denitrifying flue gas with temperature adjustment function | |
| CN219186469U (en) | Tail gas treatment system of sulfur recycling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |